Solve the problem.The function that models the consumption of a certain medication over the years 2000-2010 is
where x is the number of years after 2000 and y is measured in grams per 100,000 people. Find the inverse of this function.
A. f-1(x) = 
- 224.10
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 115.21(x - 224.10)
Answer: B
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Solve the problem.The standard deviation of a normal distribution is ? = 20. What is the interquartile range for this distribution?
A. 27 B. 33.75 C. 13.5 D. 6.75 E. none of these
Determine the degree measure of the given angle.
A. 120° B. 45° C. 135° D. 60°
Find the expected value.Suppose that 1,000 tickets are sold for a raffle that has the following prizes: one $300 prize, two $100 prizes, and one hundred $1 prizes. What is expected value of a ticket?
A. $300 B. $0.60 C. $1 D. $100
Solve.Find which is the better buy (lower cost per ounce) by finding each unit price rounded to three decimal places if necessary. Assume that different sizes of the same brand are being compared. Soy sauce: $1.31 for 22.5 ounces $0.86 for 10.0 ounces
A. $1.31 for 22.5 ounces B. $0.86 for 10.0 ounces C. Both cost the same per ounce.